a) [tex]\frac{3}{4} :\frac{2}{5}[/tex]
Conform formulei: [tex]\frac{a}{b} :\frac{c}{d} =\frac{a}{b} *\frac{d}{c}[/tex], vom avea: [tex]\frac{3}{4} *\frac{5}{2} =\frac{3*5}{4*2} =\frac{15}{8}[/tex]
b) [tex](-\frac{1}{2}):\frac{3}{7} =(-\frac{1}{2} )*\frac{7}{3} =-\frac{7}{6}[/tex]
c) [tex]\frac{2}{3} :(-\frac{3}{5})=\frac{2}{3} *(-\frac{5}{3} )=-\frac{10}{9}[/tex]
